Putting exercise on a glide path(3)

Injuries are inevitable, but Hui smiles and says it was not a big deal for her.

"It's a part of the sport. Sometimes when I was practicing difficult moves, I would get injured, but it was okay," she says.

She once tore the left collateral ligament in her ankle when practicing swan spinning, but she insisted on practicing and won the championship that year.

"At the beginning, I played just for fun but now I hope I can do more to promote the sport in China," she says. Hui's biggest wish is to perform in roller skating shows.

Another champion skater, South Korean Kim Sung Jin, 24, has stopped competition but isn't leaving the sport. He performs in skating shows and designs shoes.

Kim started practicing in 2001 and began to compete in 2003. "I roll just because I love it," he says.

Kim is a college student majoring in business, and now he is working as an intern for a skating shoes company in Shanghai.

From 2005-2007, he was the three-time winner of the Shanghai Slalom Open.

"I find the sport is becoming more popular in Shanghai. I can see many young people skating on the street now," he says. "Though I don't compete anymore, I'm still working in the industry to promote roller skating."

2014 Shanghai Slalom Open

Date: Through August 10

Venue: Huangpu District Roller Skating Stadium, 235 Dalin Rd